           of another low pass sound to increase the harmonic content."
     :auto-rate true}
 
+
    {:name "BPF",
     :summary "second order Butterworth bandpass filter"
-    :args [{:name "in", :default 0.0 :doc "input signal to be processed"}
-           {:name "freq", :default 440.0 :doc "centre frequency in Hertz"}
-           {:name "rq", :default 1.0 :doc "the reciprocal of Q.  bandwidth / cutoffFreq"}]
+    :args [{:name "in"
+            :default 0.0
+            :doc "input signal to be processed"}
+
+           {:name "freq"
+            :default 440.0
+            :doc "centre frequency in Hertz"}
+
+           {:name "rq"
+            :default 1.0
+            :doc "the reciprocal of Q.  bandwidth / cutoffFreq"}]
+
     :check (nth-input-stream? 0)
     :doc "A band pass filter permits the frequencies around a specified
           centre frequency to pass unaltered through the filter while

          real time thus creating movement in the sound."
    :auto-rate true}

   {:name "RHPF", :args [{:name "in", :default 0.0 :doc "input signal to be processed"}
                         {:name "freq", :default 440.0 :doc "cutoff frequency"}
                         {:name "rq", :default 1.0 :doc "the reciprocal of Q.  bandwidth / cutoffFreq. A lower rq results in more resonance"}]
    :check (nth-input-stream? 0)
    :summary "resonant high pass filter"
    :doc "A resonant high pass filter lets through the frequencies above
          the cutoff point and successfily dampens the frequencies below
          the cutoff point. This effectively removes the fundamental

          of another low pass sound to increase the harmonic content."
    :auto-rate true}


   {:name "LPF",
    :summary "second order Butterworth low pass filter"
    :args [{:name "in"
            :default 0.0
            :doc "input signal to be processed"}

           {:name "freq"
            :default 440.0
            :doc "cutoff frequency"}]

    :check (nth-input-stream? 0)
    :doc "A low pass filter is a standard subtractive synthesis tool
          which removes frequencies above a defined cut-off point. This
